> Today's leftwing intellectuals, on the other hand, have no organizational attachments (except perhaps to the universities they teach in or the journals they write for).
This ain't necessarily so. Here's one example. And there's Solidarity.
And, as far as I know, Doug is a member of something or other:
http://en.wikipedia.org/wiki/Leo_Panitch
[Leo Panitch] was a member of the Movement for an Independent and Socialist Canada, 1973-1975, the Ottawa Committee for Labour Action, 1975-1984, the Canadian Political Science Association, the Committee of Socialist Studies, the Marxist Institute and the Royal Society of Canada. He is currently a supporter of the Socialist Project and the Greater Toronto Workers Assembly (GTWA).
http://www.solidarity-us.org/site/atc